0503RHC8RJLGBEN
20/34
Nomenclature
This option may only be used in conjunction with appliances
fitted with Honeywell multi-functional gas controls types VR
4601P.. or type V 4600P.. The valve operator V 4336A..
3/20 for natural gas or V 4336A..4/37 for propane gas may
be used to replace the single stage gas regulator already
fitted if conversion is being under taken.
Regulation is possible for the pressure range 3-20 mbar for
natural gas and 4-37mbar for propane gas. A relay in the
burner controls circuit is necessary to ensure that burner
start-up takes place on high fire rate so that good main
burner cross lighting takes place.
Note:
The maximum gas pressure for all gas vale types is 60
mbar.
Care should be taken when handling the operator for the
purpose of replacement or exchange. If upgrading of an
existing single stage valve is being carried out then the gas
valve must be marked accordingly to ensure that
replacement parts for the future are readily identified.
Figure 11 shows in outline view the valve operator and
indicates it's principal components.
Field adjustment & check-out
Important
1.
Fitting and adjustment may only be carried out by
qualified persons.
2.
Allow time for pre-set pressure to stabilise before
making adjustments i.e. 1 minute.
3. Operate high-low regulator a few times after
adjustment to ensure correct setting.
4.
Remove cover cap as indicated in figure 11.
Setting
(refer to figure 8)
-
Lever off cover cap as indicated.
-
Before commencing an adjustment connect a
manometer to the burner pressure test point.
-
Maximum high ‘rate’ setting
must
be adjusted first
after which the minimum low ‘rate’ setting can be
adjusted. Any adjustment of the maximum setting
influences the minimum rate setting.
-
do not adjust maximum or minimum settings above or
below the pressure stated on the data plate or in table
5.
Figure 11
: V 4336A .. Gas valve operator
Adjusting maximum pressure
-
energize high-low regulator, set gas control in
operation (light burner) and wait until an outlet
pressure is recorded on pressure gauge.
-
use a 6mm hexagon wrench or a 10mm screw drier
to turn adjustment screw for maximum pressure
setting, clockwise to increase counter clockwise to
decrease pressure until the desired maximum
pressure is obtained.
-
check maximum pressure several times.
Adjusting minimum pressure setting
-
disconnect electrical connection of high-low regulator.
-
set gas control in operation and wait until an outlet
pressure is recorded on the pressure gauge.
-
if minimum pressure setting needs adjusting use a
3,5mm screw driver to turn adjustment screw for
minimum pressure setting
clockwise to increase counter clockwise to decrease
pressure until desired minimum pressure is obtained.
-
re-connect high-low regulator in circuit.
-
check maximum pressure setting, re-adjust if
necessary and check minimum pressure again.
Replace regulator cap when finished.
Note :
It is necessary to re-check pressure settings during
routine service and maintenance of the appliance.
